272 Background: Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer death and presents with advanced incurable disease approximately 75% of the time, contributing to the lowest survival rate and worst multidimensional quality of life (QOL) compared to other adult solid tumors. Standardized screening for early integration of interdisciplinary care (IDC) services, advance care planning, and utilization of electronic patient-reported outcomes (ePROs) for improved QOL and symptom management are recommended, yet the literature is lacking in rigorously-conducted PDAC needs assessments, an important prerequisite to care model design. Methods: Between September 12, 2023 and May 7, 2024, 525 patients with gastrointestinal (GI) malignancies were sent a Supportive Care Questionnaire (SCQ), an ePRO survey assessing multi-dimensional IDC needs prior to first visit at an NCI-designated comprehensive cancer center in the Pacific Northwest. The SCQ includes validated surveys and a total of 12 domains chosen by the IDC service responsible for management of the given need(s), who also set trigger thresholds for referral to the IDC service. Rates of positive screens for each service were compared by cancer type (PDAC, Colorectal [CRC], gastroesophageal [GE]). Results: 340 (65%) SCQs were completed (57% via MyChart, 43% in person) similarly across disease groups; with an average of 10 mins to complete. Respondents were 49% female/59% male (Race: White (76.5%), Asian (10%), Black/African-American (4.5%), Other/Unknown (9%)/Ethnicity Non-Hispanic (90%, Hispanic 7.6%), Other/Declined/Unknown 2.4%), with primary language spoken being English (92%), Spanish (3.5%), simplified Chinese (1.5%) and Other (2.5%). Table 1 shows – by GI cancer type –the total number of responses and the proportion of patients who screened positive for one or more IDC services. Conclusions: Patients with PDAC had the greatest need for IDC services with most frequent positive screens indicating need for nutrition, social work, palliative care and patient navigation services when surveyed in our institution-wide program of SC screening for all new GI cancer patients. Results will inform further development of IDC services in PDAC and other GI cancers, including via staff prediction modeling. The SCQ is also being considered for SC screening and management across the Canopy Cancer Collective, a nationwide learning health network of pancreas cancer programs. PDAC CRC GE Surveyed 187 237 101 Completed 122 (65%) 153 (65%) 65 (64%) Positive Screen 68 (56%) 70 (46%) 26 (40%)